Key Workmanship and Quality Control of Steel Box Girder Fabrication for Taoyaomen Bridge in Zhoushan

The main bridge of Taoyaomen Bridge in Zhoushan is a 7-span semi-floating system and continuous hybrid girder cable-stayed bridge of double pylons and double cable planes.The side spans of the Bridge are of concrete box girders while the central span is of streamlined flat steel box girder.In this paper,the key workmanship and techniques for fabrication of the steel box girder of the main bridge and quality control measures adopted in the fabrication process are expounded.